Teeth bleaching is one of the most popular cosmetic dentistry methods that is used to lighten the color of teeth and remove surface and deep stains... This method is especially effective for people who have yellow, dark or discolored teeth... Causes of tooth discoloration
Before bleaching, the cause of the discoloration of the teeth must be determined, because some cases do not respond to bleaching... tetracycline in childhood, trauma to the teeth, aging or metabolic problems.... This type of discoloration is more resistant to bleaching and may require alternative treatments such as laminate or composite veneer, and it does not work in cases of internal bleaching.. Whitening methods
1.... bleaching in the office (administrative bleaching)
In this method, bleaching is done in the clinic environment under the supervision of a dentist... Steps:
1\... cleaning the surface of the tooth from dirt and debris... 2\... using a protective gel (Gingival Barrier) to prevent soft tissue irritation... 3\... using hydrogen peroxide (30-40%) or carbamide peroxide on the tooth surface... 4\... activating the bleaching gel or active light blinding without LED laser... repeating the process several times... 6\... washing and checking the result Final.... Duration: 45-60 minutes in one session.... Durability: 6 months to 2 years (with sufficient accuracy).... Advantages of bleaching in the office:
✔ Quick and visible results in one session
✔ It is more effective for very yellow or stained teeth
✔ Professional control by a dentist
Disadvantages:
Temporary tooth sensitivity
❌ In case of inaccuracy, the color can be returned
❌ Higher cost than home bleaching
2.... bleaching at home (home bleaching)
In this method, the patient performs daily bleaching using customized trays and bleaching gel with a lower concentration (10-20% carbamide peroxide)... 1\... The dentist takes a mold of the patient's teeth and makes a transparent tray for him... 2\... The patient puts a certain amount of bleaching gel in the tray and puts it on his teeth for 2 to 4 hours a day... 3\... This process usually takes 2 It takes 4 weeks to reach the desired color.... Shelf life: 6 months to 2 years (with proper home care)
✔ Gradual and controlled with less sensitivity
✔ More affordable cost
✔ The possibility of extending bleaching in the future with this tray
Disadvantages:
❌ Time consuming (it takes a few weeks to get results)
❌ The need for patient cooperation and regular use of Terry
3 .... combined bleaching (combination of bleaching in the office and at home)
✅ In this method, the patient first performs a bleaching session in the office to get the initial whiteness, and then continues with home bleaching for more durability.... ✅ The best option for long durability and more natural results... 4... Internal bleaching
This method is used for root-treated teeth (nervectomy) that have changed color.. 1\... the dentist opens the inside of the tooth canal and puts the bleaching gel inside... 2\... the tooth is closed with a temporary dressing and the gel is removed after a few days... 3\... if the color is not whitened enough, this procedure is repeated several times... ✅ It is suitable for dark teeth and nerve removal... bleaching.. after bleaching to maintain To whiten the teeth and prevent them from changing color again, it is necessary to follow the following points:
Avoiding colored substances such as coffee, tea, soft drinks, chocolate, colorful foods and cigarettes for at least 48 hours... Factors affecting the bleaching effect
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The concentration of the whitening agent: higher concentrations (30-40%) have a faster effect, but increase the sensitivity of the tooth.... Contact time with the tooth: the longer the agent stays on the tooth, the whiter it becomes... laser) can accelerate the oxidation reaction.... Questions:
1- Why does tooth sensitivity develop after bleaching? The oxidation process can irritate the nerve endings of the tooth, which leads to temporary sensitivity of the teeth... This sensitivity usually decreases within 24 to 48 hours and can be reduced by using anti-allergic toothpaste or fluoride therapy... to perform bleaching.
🔹 Less than 15-16 years: ❌ Not recommended (due to thin enamel and increased tooth sensitivity)
🔹 16 to 18 years: ⚠️ in special cases and with caution (usually in cases of severe stains or yellow teeth)
🔹 Above 18 years: ✅ The most suitable age for bleaching, because the structure of the teeth is complete... If teeth bleaching is done correctly and under the supervision of a dentist, it does not cause serious damage to tooth enamel.
Whitening agents usually contain hydrogen peroxide or carbamide peroxide, which penetrates the surface layers of the teeth and causes bleaching if the discs break, which causes bleaching. Done wrong, this is possible:
• Increased sensitivity of teeth.... • Leads to dryness and loss of tooth enamel minerals.... • Causes gum inflammation (in case of excessive contact of the substance with soft tissues).... To prevent these side effects, it is better:
✔ Perform bleaching only under the supervision of a dentist.... ✔ Do not use unreliable products and non-scientific methods.... ✔ After bleaching, use hypoallergenic toothpaste and a proper diet (without strong pigments)... 4- Is bleaching a permanent treatment?... No, bleaching is not a permanent treatment... Its effect depends on several factors: it is temporary and the duration of its effect depends on several temporary factors... ✅ Eating habits: consuming a lot of tea, Coffee, colored drinks and cigarettes cause the discoloration of the teeth to return.... Health care: regular brushing and flossing can increase the duration of bleaching... they are faster... usually the results of bleaching remain between 6 months and 2 years, and if needed, the color of the teeth can be maintained with touch-up sessions... 5-How much does bleaching whiten teeth?. The amount of lightening of teeth after bleaching depends on various factors, but they usually become whiter between 2 and 8 degrees. Factors affecting the amount of whiteness of teeth after bleaching:
✅ Type of tooth discoloration: in discoloration of surfaces caused by food or smoking, bleaching is more effective.... but discoloration caused by internal factors (such as the use of tetracycline in childhood) or gray colors may respond less.... ✅ Bleaching method: office bleaching (in the office) usually has a faster effect, while home bleaching (at home) gradually whitens the number of sessions: ✅ be.... Tooth structure: some of Teeth naturally respond better to bleaching... 6- Which people is bleaching not suitable for?.. Some people are not a good option for teeth bleaching because they may not get the desired result or suffer complications.. These people include the following:
1.... People with teeth with extensive restorations
• Bleaching does not affect veneers, laminates, composites, and fillings, so natural teeth may be whitened, but restorations may not change color and create an incongruous appearance... 2.
• If the enamel is thin or cracked, bleaching agents may cause severe sensitivity or tooth damage... 4... People with naturally dark or gray teeth... • Bleaching is more effective on yellow teeth... but gray or brown teeth may respond less... 5... People with severe tooth sensitivity
• Bleaching can aggravate tooth sensitivity, especially in people who are already sensitive... 6... Patients with gum disease or active decay... • Before bleaching, gum disease and tooth decay must be treated, because bleaching agents can aggravate these problems... 7... Pregnant and lactating women... and breastfeeding... 8... People under 18 years old... • Tooth enamel in young people is not yet complete, so bleaching may affect the tooth structure. harm.. 7- Can composite veneers be made whiter by bleaching? No, composite veneers cannot be made whiter by bleaching.... Bleaching materials only affect the natural enamel of the tooth and cannot change the color of the composite, veneer, laminate or fillings of the same color as the tooth.... If the color of the composite has changed, what is the solution?... ✅ Composite polishing: In some cases, stains and surface discoloration can be removed by professional polishing.... ✅ Replacement Composite: If the color change is severe and polishing does not work, it may be necessary to replace the composite... Yes, bleaching only affects natural teeth and their color may not be compatible with composites... Advantages of bleaching:
✅ Increasing the beauty of the smile - whitening the teeth makes the smile look more beautiful and attractive.... ✅ Non-invasive method without grinding teeth - bleaching, unlike laminate or composite, does not require the preparation of tooth enamel...
✅ High speed in changing the color of the teeth - especially in office bleaching (office bleaching), which results in an increase in self-confidence in one session - increases self-confidence... a person's self-confidence and attractiveness... ✅ Painless and safe - if it is done under the supervision of a dentist, it has no special complications and is completely safe... ✅ Lower cost than laminate or composite - the cost of bleaching is lower than beauty treatments such as laminate and coated... ✅ Preserves the structure Natural teeth - because there is no change in the structure of the teeth, the teeth remain healthy and natural... Note: Bleaching is not permanent and the necessary care must be taken to maintain the whiteness of the teeth. During this period, the color of the teeth may change again... ❌ Increase in tooth sensitivity - Some people experience temporary sensitivity to cold, heat or acidic foods after bleaching... ❌ No effect on tooth restoration - Bleaching has no effect on composites, veneers, laminates and tooth-colored fillings and may cause disharmony and change the color of the teeth. Bleach - consumption of tea, coffee, colored drinks, cigarettes and some colored foods cause the teeth to change color faster... Result: If bleaching is done under the supervision of a dentist, its side effects can be controlled... but to maintain the result, follow-up care must be observed.